See the PyPy JIT In Action 109
derGoldstein writes "Project PyPy is an alternative implementation of Python, with the main advantage being a Just In Time (JIT) compiler which speeds up your code considerably. They've announced the first public release of jitviewer, which is a visualization tool that helps you understand how your code is being compiled by PyPy's JIT, all the way down to assembly. If you just want to see how it looks and play with it, they've set up an online demo — just select a file, and click 'Show Assembler.'"
Re:The difference between Python and Ruby devs. (Score:2, Interesting)
I'm a python fan, but I think you are being a little bit unfair with the ruby community.
Python simply has more people working on making it fast (the pypy project started 8 years ago, and only recently it started to deliver on its promises).
By the way, pypy is a framework for creating jitted dynamic languages (it's written in python, but can be used to implement any other language).
So chances are that soon, someone will write a Ruby implementation with pypy, and this ruby vm will enjoy all the performance of the python one, because it will have an automatically created just-in-time compiler.
Quora (Score:2, Interesting)
quora.com is now running on PyPy.
http://www.quora.com/Alex-Gaynor/Quora-product/Quora-is-now-running-on-PyPy